Mercury - Platinum Plus Throttle and Shift Cable 8 Foot Mechanical Engine Control. The Mercury Platinum Plus Throttle and Shift Cable is designed for boats using Mercury Gen II SAE mechanical control systems where smooth, predictable response at the helm is important. Built with Platinum Plus construction, it provides a direct mechanical connection between the control and the engine while delivering a lighter, more refined feel than standard mechanical cables. The 8-foot length works well for co